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Pacific · Penicillin G Allergy Test – Drug Allergy

Penicillin G Allergy Test – Drug Allergy in California

This page explains the penicillin g allergy test – drug allergy, what it measures, and how to order it. A Penicillin G allergy test checks for IgE antibodies that may indicate an allergic response to the antibiotic penicillin G. It is a blood test that can help evaluate sensitivity when a penicillin allergy is suspected.

Sample typeBlood and/or urine at a collection lab
ReferralIncluded — no referral from your own doctor needed

Lab requirements in California

Here is what you need before ordering and completing the Penicillin G Allergy Test – Drug Allergy in CA. Review each item and confirm the details with the collection lab.

Physician's order
Included. A physician's order is required for lab testing and is provided for you by our partner's physicians — no referral from your own doctor is needed.
Fasting
Some tests require fasting or avoiding certain foods or drinks beforehand. You will be informed when you order — confirm the details with the collection lab.
Preparation
Preparation is generally minimal, but you should follow the specific instructions provided by the collection laboratory or your healthcare provider. This may include telling the lab about…
Sample & visit
A blood and/or urine sample is collected; the visit usually takes about 10 minutes.
Identification
Bring the lab requisition form from your account. The collection lab may also ask for a government-issued photo ID.
Turnaround
1-3 business days
Availability
Our partner lab does not serve ND, RI, NY, NJ, MD or HI. Confirm availability for your location with the collection lab.

Before you go

  • Order your test before visiting a lab, then use the requisition form in your account.
  • Print the requisition form, or fax it to the lab directly from your account.
  • No scheduling is needed — visit the collection lab during its normal business hours.
  • A blood and/or urine sample is collected; the visit usually takes about 10 minutes.
  • Bring a government-issued photo ID in case the lab requests it.
  • Results are posted to your secure account within 1–3 business days.

Requirements are summarized from our partner lab's published policies. Preparation and availability can change — confirm current instructions with the collection lab before your visit.

What this test is

This test measures specific IgE antibodies in the blood that target penicillin G, also called benzylpenicillin or penicilloyl G. It is one type of drug allergy blood test used to assess whether a person may have an allergic sensitivity to this antibiotic. It does not test for all possible reactions to penicillin and is not a substitute for a complete allergy evaluation.

What it measures

  • Penicillin G specific IgE — reflects the level of IgE antibodies directed against penicillin G
  • Penicilloyl G specific IgE — reflects antibodies to a major penicillin metabolite
  • Total IgE (if included) — may provide context for overall allergic antibody levels

What the test involves

A healthcare professional collects a small sample of blood, usually from a vein in your arm, using a standard blood draw. The sample is then sent to a laboratory for analysis.

Why it is often ordered

A clinician may order this test when there is a history of a possible allergic reaction to penicillin or when the safety of using penicillin-related antibiotics needs to be assessed. It is often used along with other information, such as symptoms and medical history, to help guide decisions about antibiotic choices.

Preparation

Preparation is generally minimal, but you should follow the specific instructions provided by the collection laboratory or your healthcare provider. This may include telling the lab about any medications you take, as some drugs could affect test results.

How results are reported

Results are typically reported as a numerical value or a qualitative category, such as negative or positive, based on the level of specific IgE detected. Reference ranges and reporting methods vary by laboratory, so your results should always be interpreted in the context of the lab's own ranges and your clinical history.

Before you go

  • Whether any medications you take could affect the test results
  • If fasting or other special preparation is required
  • How and when you will receive your test results

Cities

Penicillin G Allergy Test – Drug Allergy in California communities

Choose your city for local context and to order this test.

Los Angeles12,121,244Penicillin G Allergy Test – Drug AllergySan Francisco3,290,197Penicillin G Allergy Test – Drug AllergySan Diego3,084,174Penicillin G Allergy Test – Drug AllergyRiverside2,022,285Penicillin G Allergy Test – Drug AllergySacramento1,924,167Penicillin G Allergy Test – Drug AllergySan Jose1,729,879Penicillin G Allergy Test – Drug AllergyFresno719,558Penicillin G Allergy Test – Drug AllergyConcord640,270Penicillin G Allergy Test – Drug AllergyBakersfield590,845Penicillin G Allergy Test – Drug AllergyMission Viejo588,540Penicillin G Allergy Test – Drug AllergyMurrieta509,526Penicillin G Allergy Test – Drug AllergyLong Beach466,565Penicillin G Allergy Test – Drug AllergyOakland437,548Penicillin G Allergy Test – Drug AllergyStockton406,822Penicillin G Allergy Test – Drug AllergyVictorville389,060Penicillin G Allergy Test – Drug AllergyModesto382,994Penicillin G Allergy Test – Drug AllergyLancaster381,732Penicillin G Allergy Test – Drug AllergyOxnard366,330Penicillin G Allergy Test – Drug AllergyIndio361,831Penicillin G Allergy Test – Drug AllergyAnaheim348,204Penicillin G Allergy Test – Drug AllergyAntioch322,796Penicillin G Allergy Test – Drug AllergySanta Rosa314,196Penicillin G Allergy Test – Drug AllergySanta Ana313,818Penicillin G Allergy Test – Drug AllergyIrvine297,868Penicillin G Allergy Test – Drug AllergySanta Clarita275,230Penicillin G Allergy Test – Drug AllergyChula Vista274,818Penicillin G Allergy Test – Drug AllergyVisalia249,804Penicillin G Allergy Test – Drug AllergyFremont231,502Penicillin G Allergy Test – Drug AllergySan Bernardino220,821Penicillin G Allergy Test – Drug AllergyThousand Oaks211,045Penicillin G Allergy Test – Drug AllergyMoreno Valley208,371Penicillin G Allergy Test – Drug AllergyFontana208,087Penicillin G Allergy Test – Drug AllergySalinas199,290Penicillin G Allergy Test – Drug AllergyHuntington Beach198,735Penicillin G Allergy Test – Drug AllergySanta Barbara198,240Penicillin G Allergy Test – Drug AllergyGlendale196,512Penicillin G Allergy Test – Drug AllergyHemet191,170Penicillin G Allergy Test – Drug AllergyVallejo181,882Penicillin G Allergy Test – Drug AllergyElk Grove175,510Penicillin G Allergy Test – Drug AllergyOntario175,223Penicillin G Allergy Test – Drug AllergyOceanside174,461Penicillin G Allergy Test – Drug AllergyRancho Cucamonga173,946Penicillin G Allergy Test – Drug AllergyGarden Grove172,708Penicillin G Allergy Test – Drug AllergyPalmdale167,987Penicillin G Allergy Test – Drug AllergySanta Cruz165,933Penicillin G Allergy Test – Drug AllergyHayward162,254Penicillin G Allergy Test – Drug AllergyCorona157,844Penicillin G Allergy Test – Drug AllergyMerced157,617Penicillin G Allergy Test – Drug AllergySunnyvale155,550Penicillin G Allergy Test – Drug AllergyPomona151,592Penicillin G Allergy Test – Drug AllergyEscondido151,443Penicillin G Allergy Test – Drug AllergyTorrance147,156Penicillin G Allergy Test – Drug AllergyRoseville145,687Penicillin G Allergy Test – Drug AllergyFairfield145,163Penicillin G Allergy Test – Drug AllergyFullerton142,964Penicillin G Allergy Test – Drug AllergySanta Maria142,230Penicillin G Allergy Test – Drug AllergyOrange139,195Penicillin G Allergy Test – Drug AllergyPasadena138,771Penicillin G Allergy Test – Drug AllergyYuba City129,536Penicillin G Allergy Test – Drug AllergySanta Clara127,922Penicillin G Allergy Test – Drug Allergy